The Email Address Crawler Plugin might work. Note that the earlier version is no longer maintained. To use the updated version:
- Follow the direct download link. (Attention this is not approved by Mozila jet, see comment below)
- Start Thunderbird (v31.0 or greater).
- Open the triple-bar menu (≡).
- Click Add-ons.
- Click the icon beside the search text box to open a drop-down menu.
- Select Install Add-on From File...*
- Browse to the download location for Email Crawler.
- Select the file (e.g.,
emailcrawler-5.1.2.xpi
). - Click Open.
- Click Install Now.
- Click Restart Now.
Then:
- Right-click on any folder.
- Select Crawl folder for email addresses.
- Check To and From.
- Set Choose a [sic] addressbook as a target for the found addresses to
Collected Addresses
. - Optionally, set Needed # of occurrences to
2
(to help filter invalid addresses). - Click OK.
If you want to use an approved Plugin from Moxilla Add-On Page, maybe the Email Address Crawler Plugin is a solution for you?
EMail Address Crawler by CySlider
Automatically fill your address books or send mass mails with e-mail addresses extracted from all your e-mails.
It is a bit outdated, but there is stated by someone it that still worked in 17.0, so maybe it still works in Thunderbird 31